What are the most common types of rocks found in the Philippines?
The most common types of rocks found in the Philippines are volcanic rocks, sedimentary rocks, and metamorphic rocks. Volcanic rocks are formed from magma that has cooled and solidified, and are found in areas near volcanoes. Sedimentary rocks are formed from the deposits of sediment that have been compacted and cemented over time. Metamorphic rocks are formed when existing rocks are subjected to high temperatures and pressures, which causes them to change their structure and composition.